function uploadFace(sender){
	
   if(!sender.value.match(/.jpg|.gif|.png|.bmp|.webp/i)){
		alert('请选择图片文件');
   }else{
		const oFileName = document.getElementById('fileName');
		oFileName.value = sender.files[0].name;
			
		const oPreview = document.getElementById('preview');
		oPreview.src = window.URL.createObjectURL(sender.files[0]);
		oPreview.style.display = 'block';
		oPreview.setAttribute('bigsrc',oPreview.src);
   }
}